Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
131 words
A dynamic acoustic transducer, suitable for being used as an earphone, comprising a. a diaphragm having a resonant frequency in the lower transmission range, b. at least one front sound outlet on one side of said diaphragm suitable for acting directly on the entrance to the auditory canal, c. at least one year sound outlet on the other side of said diaphragm which provides a detour path for sound, and d. acoustically damping spacer means for preventing the sealing off of the entrance to the auditory canal with respect to the air space surrounding the acoustic transducer, sound reaching said auditory canal by a first path comprising said front sound outlet and acoustically damping spacer means, and by a second path comprising said rear sound outlet and said acoustically damping means.
Claim 2
Dependent Claim
131 words
A dynamic acoustic transducer, suitable for being used as an earphone, comprising a. a diaphragm having a resonant frequency in the lower transmission range, b. at least one front sound outlet on one side of said diaphragm suitable for acting directly on the entrance to the auditory canal, c. at least one year sound outlet on the other side of said diaphragm which provides a detour path for sound, and d. acoustically damping spacer means for preventing the sealing off of the entrance to the auditory canal with respect to the air space surrounding the acoustic transducer, sound reaching said auditory canal by a first path comprising said front sound outlet and acoustically damping spacer means, and by a second path comprising said rear sound outlet and said acoustically damping means.
Claim 3
Dependent Claim
17 words
A dynamic acoustic transducer according to claim 1, wherein the acoustic damping material is a foam material.
Claim 4
Dependent Claim
18 words
A dynamic acoustic transducer according to claim 2, wherein the acoustic damping material is an acoustic foam cushion.
Claim 5
Dependent Claim
32 words
A dynamic acoustic transducer according to claim 1, wherein the acoustically damping spacer means has at least one opening on its surface between the diaphRagm and the entrance to the auditory canal.
Claim 6
Dependent Claim
52 words
A dynamic acoustic transducer according to claim 1, wherein at least one rear sound outlet extends from the side of the diaphragm away from the ear to the air space surrounding the acoustic transducer via acoustic conduits which are terminated with their characteristic impedance on the end discharging into the air space.
Claim 7
Dependent Claim
26 words
A dynamic acoustic transducer according to claim 5, wherein the acoustic conduits are so dimensioned that their characteristic impedance coupled to the diaphragm damps the diaphragm.
Claim 8
Dependent Claim
15 words
A dynamic acoustic transducer according to claim 1, comprising a plurality of rear sound outlets.
Claim 9
Dependent Claim
19 words
A dynamic acoustic transducer according to claim 7, wherein the plurality of rear sound outlets comprise four sound outlets.
Claim 10
Dependent Claim
22 words
A dynamic acoustic transducer according to claim 7, wherein the plurality of rear sound outlets are distributed substantially uniformly over a circle.
Claim 11
Dependent Claim
23 words
A dynamic acoustic transducer according to claim 1, wherein said acoustically damping spacer means covers the outward facing surface of a cover member.
Claim 12
Dependent Claim
23 words
A dynamic acoustic transducer according to claim 1, wherein a treble resonator is positioned between said diaphragm and said acoustically damping spacer means.
Claim 13
Dependent Claim
19 words
A dynamic acoustic transducer according to claim 1, wherein the acoustically damping spacer means is removable from the earphone.